Improvement in automatic gate



J n/ Ags ital @laten eine?.

me, L)

New

THOMAS J. MURPHY, OE ROCHESTER, NEW YORK.

Letters Patent No. 84,569, dated December 1, ISGS; mtteda'ted November 18, 1868.

IMPROVEMENT IN AUTOMATIC GATE.

The scneaure `referred to in heee Leners Patent and making pm of the game.

To all whom. 4it may concern Be it known that- I, THouas J. MURPHY, of Rochester, in the county ofMonroe, and State of X ew York, have invented a new and uset'ul Improvement in Automatic Gates; and Ido hereby declare the ibllowing to be a clear, full, and exact description of the same, suiiicient to enable others skilled in the art to which my invention appert-ains, to fully understand and use the same, reference being had to the accompanying chawin'gs, makingl part of this specitication, and in which-' Figine l is a front view of the device, illustrating my invention.

Figure 2 is a side view thereof.

Similar letters of 'reference indicate like parts in both figures.

' My invention consists in certain -new and useful means for opening and closing gates bv the weight of the wagon or carriage, whose front wheels pass over levers operating the necessary parts, which raise and lower slides, on which the gates are hung, as will be hereinafter more fullwv described.

In the drawings, A represent-s ordinary levers, pivoted to short standards, rising 'om the ground or iiooring. The inner ends thereof are connected, by rods, to elbow-levers, which are pivoted to the side pieces of the frame-work which supports the gate.

These elbow-levers are also connected to the lower end of vertical rods B, whose upper ends are connected to elbow-levers C, which are pivoted at opposite points of the upper ends of the frame-work.

The levers O point toward each other, and have secured to their inner ends cords or chains, which pass over'pulleys journalled to the frame-work, and then are connected to slides D.

These slides are suitable strips or pieces, guided in their rising and falling motions by straps or guides secured to the upper part of the frame-work. l

E represents levers, which 'are pivoted, at or about their middle points, to the frame-work, and have one end pivoted-to' the slides D, and their other ends formed with shoulders or stops.

In this lever E, I mount pulleys, carrying the arms b5' which the right and left sections ot' the gate are suspended.

It will be seen that the gate is represented, in black, in a closed position. Now, when the fore wheels of the carriage or wagon depress the outer ends of lever A, the rod B and elbow-levers O are operated, so as to raise the slides D and the inner ends of the levers.

B v these means, the roller carries the gates away from each other, and thus opens them, as indicated in red.

To the trame-work of the gate I also pivot levers G and I, which are connected together by loops H, and pivoted to the slides Dby giinbal-loops T.

The outer ends'of lever I have pivoted to them rods K, connected to levers L, whose bearings are on the sides of' the frame-work.

These levers L have secured to them the upper ends ot rods M, whose lower ends are connected to elbowlevers N, to which levers O` are pivoted.

\Vhen the levers O are depressed,'they operate the levers N L, and rods M K, and the elbow-levers G I, and loops F H, thereby raising slides D, and lowering the inner ends ot' the swinging levers E. The rollers then are directed towards the centre of the framework, carry the gates towards each other, and thus close them adam.

oThe various parts should be duplicated, in order that the gate will be closed or shut, when the vehicle is going in or out. Y Y

My device will be found practical and useful.

Having thus described my invention,

lVhat I claim as new, and desire to secureby. Letters Patent, is

1. The swinging lever E, in combination with the slide D, elbow-levers O, rod B, and lever A, substanf tially as and for the purpose described.

2. The swinging lever E, in combination with loops F H, elbow-levers G I N, rods K M, and lever's L O, substantially as and for the purpose described.

T. J. MURPHY. Witnesses:

J.V D. CLARK, J ons T. C. CLARK. 

